Finding the Fourth Proportional to 1,640,220,433.20, 2,460,330,649.80 and 491,363,089.20
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Solution
The fourth proportional to 1,640,220,433.20, 2,460,330,649.80 and 491,363,089.20 is: 737,044,633.80
Step by Step Solution
- Step 1: Write the proportion equation
1,640,220,433.20 : 2,460,330,649.80 = 491,363,089.20 : x - Step 2: Convert to fraction form
1,640,220,433.20/2,460,330,649.80 = 491,363,089.20/x - Step 3: Cross multiply
1,640,220,433.20x = 2,460,330,649.80 × 491,363,089.20 - Step 4: Simplify right side
1,640,220,433.20x = 1,208,915,668,539,171,328 - Step 5: Solve for x
x = 1,208,915,668,539,171,328/1,640,220,433.20 - Step 6: Final answer
x = 737,044,633.80
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.